<template>

  <view class="search-box">
    <!-- 使用 uni-ui 提供的搜索组件 -->
    <uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
    <!-- 搜索建议列表 -->
    <view class="sugg-list" v-if="searchResults.length !== 0">
      <view class="sugg-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item.goods_id)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
     <!-- 搜索历史 -->
     <view class="history-box" v-else>
       <!-- 标题区域 -->
       <view class="history-title">
         <text>搜索历史</text>
         <uni-icons type="trash" size="17"></uni-icons>
       </view>
       <!-- 列表区域 -->
       <view class="history-list">
         <uni-tag :text="item" v-for="(item, i) in historyList" :key="i"   @click="gotoGoodsList(item)"></uni-tag>
       </view>
     </view>
    
  </view>
    

</template>

<script>
	export default {
		data() {
			return {
				 timer:null,
         kw:'',
          // 搜索结果列表
         searchResults: [],
          // 搜索关键词的历史记录
          historyList: ['a', 'app', 'apple']
			};
		},
    onLoad(){
       this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods:{
      //表单输入事件
      input(e){
        clearTimeout(this.timer)
         console.log(e.value,66)
       this.timer = setTimeout( ()=>{
           this.kw =e.value
             // 根据关键词，查询搜索建议列表
           this.getSearchList()
         },500)
      },
      //表单输入发请求
      async getSearchList(){
        //判断关键词是否为空
        if( this.kw === '') {
            this.searchResults=[]
            return 
        }
        //发起请求,获取搜索建议
        const {data:res }= await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
        console.log(res,444)
        if( res.meta.status !== 200 ) return uni.$showMsg()
        this.searchResults =res.message
        //调用保存
        this.pushHistory()
      },
      gotoDetail(id){
        console.log(123)
         uni.navigateTo({
           url:'/subpkg/goods_detail/goods_detail?goods_id=' + id
         })
      },
      // 保存输入的历史记录
      pushHistory(){
        // this.historyList.unshift(this.kw)
        const set=new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList=Array.from(set)
        // uni.setStorageSync('kw',JSON.styingify(this.historyList))
        uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      gotoGoodsList(item){
       
       uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?query='+item,
        })
        
      },
    }
	}
</script>

<style lang="scss">
.sugg-list {
  padding: 0 5px;

  .sugg-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;

    .goods-name {
      // 文字不允许换行（单行文本）
      white-space: nowrap;
      // 溢出部分隐藏
      overflow: hidden;
      // 文本溢出后，使用 ... 代替
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}
.history-box {
  padding: 0 5px;

  .history-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }

  .history-list {
    display: flex;
    flex-wrap: wrap;

    .uni-tag {
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
